How to Order
—
Factory Ranged and Configured
Options
Model
Power
Input
Outputs
Alarm Code
Description
APD 41391
85-265 VAC, 60-300 VDC
Specify
T/C type,
temperature
range in
°F or °C
Ch. 1
specify
VDC or mADC
range
Custom
Push-to-Test
___% span
Ch. 2
specify
T/C type
none
-
B
N
RA
HP
HT
U
Upscale burnout (standard)
Downscale burnout
No burnout, last valid value
Reverse-acting alarm
Latching relay, power-off reset
Latching relay, push button reset
Conformal coating for moisture
resistance
APD 41391 D
9-30 VDC, 10-32 VAC
APD 41391 H
85-265 VAC, 60-300 VDC
HI alarm
(failsafe)
APD 41391 DH
9-30 VDC, 10-32 VAC
APD 41391 L
85-265 VAC, 60-300 VDC
LO alarm
APD 41391 DL
9-30 VDC, 10-32 VAC
Thermocouple Input to DC & Thermocouple Dual Output Splitter/Converter, Factory Ranged
APD 41391
1 Input:
Any Thermocouple
2 Outputs:
Process Voltage or mA + Any Thermocouple, Alarm Relay Options
O
Split or Convert a T/C to DC Output & Any T/C Output
O
Add Additional Isolated Output to Existing T/C
O
Zero and Span Output Calibration
O
Input LoopTracker
®
LED
O
Sink/Source for DC Output
Q
Convert/Isolate Thermocouples for PLC Input,
Control and/or Validation
Q
Interface Thermocouples with Panel Meters, PLCs,
Recorders, Data Acq., DCS, & SCADA Systems
Applications
Thermocouple Input, Factory Set
T/C types:
J, K, T, E, M, N, P, R, S, B, C, D, G
Temp. range: Full ANSI range, or specify °F or °C range
Linearity:
±0.1°C and 0.001°C resolution
Linearization: Polynomial, 1°C segments for types M and P
T/C CJC:
Automatic
T/C current: Less than 10 µA, including burnout sense
T/C burnout: Upscale (standard),
B
: downscale,
N
: none
Custom:
Provide T/C millivolt data, °F or °C range
Status LEDs
LoopTracker:
Variable brightness green for input level
Yellow LED:
Output 1 Push-to-Test status, error status
Red/green LED: Alarm state (with alarm option only)
DC Output, Channel 1, Factory Set
Linearized to temperature
Voltage:
0-1 V to 0-10 V (10 mA max.), ±1 V to ±10 V
Current:
0-1 mA to 0-20 mA
20 V compliance, 1000
Ω
at 20 mA
Sinking or sourcing output
Loop power: 20 VDC nom., regulated, 25 mADC
<10 mV
RMS
max. ripple
Thermocouple Output, Channel 2, Factory Set
T/C types:
J, K, T, E, M, N, P, R, S, B, C, D, G
Output limited by smallest ANSI T/C range
Linearization: Polynomials, 1°C segments for types M and P
T/C CJC:
Automatic, can be factory disabled
Output Calibration
Zero and span potentiometers for each output, ±15% range
Output Push-to-Test (DC Output 1)
Front push button and terminals enables/disables test level
output. Set to 75% of output span. Specify custom setting.
Output Resolution
16 bit
Output Ripple and Noise
Less than ±0.2% of span
Optional Alarm Relay
Single setpoint dual DPST contact sets, factory configured
1 Form A (NO) and 1 Form B (NC) contact sets (4 terminals)
May be field wired for Form C operation
8 A max @ 240 VAC
resistive load
Use external contact
protection (RC snub-
ber) for inductive loads
Red/Green bi-color
LED indicates alarm
status
One set point, 12
turn potentiometer,
0-100% of span
One reset point, 12 turn potentiometer, 0-100% of span
Default: HI alarm, non-latching, normal acting (failsafe)
Relay Test button toggles relay to opposite state or resets
relay with HT option
Ambient Temperature Range and Stability
–10°C to +60°C operating ambient
Better than ±0.02% of span per °C stability
Response Time
500 milliseconds minimum
Isolation
Full 4-way galvanic: input, output 1, output 2,
power, 1200 V
RMS
min.
600 VACp or 600 VDC common mode protection
75 dB minimum common mode rejection
Simultaneous 50 Hz and 60 Hz rejection
Housing and Connectors
IP 40, requires vertical installation on a 35 mm DIN
rail inside a panel or enclosure. Allow room for
air flow. For use in Pollution Degree 2 Environment.
Eight 4-terminal removable connectors,
14 AWG max. wire size
Power
85-265 VAC, 50/60 Hz or 60-300 VDC, 3 W maximum
D versions: 9-30 VDC or 10-32 VAC 50/60 Hz, 3 W maximum
Dimensions
1.78" W x 4.62" H x 4.81" D
(45 mm W x 117 mm H x 122 mm D)
Quick Link:
api-usa.com/tc
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api-usa.com
1220 American Way Libertyville, IL 60048
Phone:
800-942-0315
Fax: 800-949-7502
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ROCESS
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NSTRUMENTS
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I/O Setup!
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Made in USA
Applications Link
api-usa.com/apps
Pb
Lead
Free
Sink or Source
Output for
mADC Channel
Output Test for
DC Channel
Universal Power
Optional Alarm
Relay
Input
LoopTracker
LED
Zero and
Span for
Each Output
Status LED
Note: Temperature range is limited by the smallest ANSI
range of the two T/C types selected.
Switching Current (A)
Switching Voltage (V)
0
3 5 10
30 50 100 300 500
8
5
3
1
0.5
0.3
0.1
AC inductive load
(cos
f
= 0.4)
AC resistive
load
DC inductive load
(L/R = 7 ms)
DC resistive
load
Removable Plugs
See Wiring
Diagrams on
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Description
The APD 41391 accepts a thermocouple temperature input and
provides one DC process output and one thermocouple output.
This makes it useful to match up the available thermocouple
type with an instrument input type, for data recording, or when
isolating the input.
The thermocouple input type and temperature range are fac-
tory set. The DC output type and range, and the thermocouple
output type and range are factory set. The DC output and the
thermocouple output correspond to the input temperature
range specified. Mixed T/C types are limited by the ANSI
temperature range. Use appropriate thermocouple extension
wire as needed.
The input is sampled, CJC compensated, digitally converted to
a linearized temperature signal, and then passed to the output
stages where it is converted to a DC output and a simulated
thermocouple output with CJC compensation. Contact factory
if the CJC compensation is to be disabled.
Full 4-way galvanic isolation (input 1, output 1, output 2,
power) make this module useful for ground loop elimination,
common mode signal rejection, and noise pickup reduction.
LoopTracker
An API exclusive feature includes a green LoopTracker LED that
varies in intensity with changes in the input signal and a red
LoopTracker LED that varies in intensity with changes in the
channel 1 DC output signal. It provides a quick visual picture
of your process at all times and can greatly aid in saving time
during initial startup and troubleshooting.
Output Push-to-Test
An API exclusive feature includes an output test switch to pro-
vide a fixed output for the DC output channel (independent of
the input) when pressed. The output test greatly aids in saving
time during initial startup and/or troubleshooting.
The output test level is factory set to approximately 75% of
span but a custom test level may be ordered.
